Check the logging tasks and device support you need before comparing purchase options.
Make a short test session
Include a main lift, a variation and an equipment note. Record actual results that differ from the plan.
Inspect history and export
Find a prior session and check the available range. Open a sample export to see whether it contains the fields you need.
Read claims at the right level
The Weights listing documents iPhone and iPad logging plus PDF/CSV export. It does not establish a universal best-app ranking, a Watch companion or automatic synchronization.
Inspect the complete recording loop
An app evaluation should include preparation, entering a set, correcting it, saving the workout and reopening the result. Use a small routine with familiar exercise names so the interface is what you are testing. Include an uneven final set to check that actual results remain separate from the plan. Keep notes on any step you cannot verify rather than filling the gap with a marketing assumption.
Separate iPhone support from other capabilities
An iPhone listing does not establish Apple Watch support, Android availability, synchronization between devices or complete offline operation. Check those requirements individually in current documentation or the released app. For Weights, documented iPhone and iPad availability and export should not be expanded into unsupported transfer promises. Compare the purchase terms and historical views relevant to your needs before deciding whether a paid tier is useful.